Aethue c



(N0 Model.)

A. o. P'PPON. DRAWING APPARATUS. V Y No. $47,099. Patented Aug.V 1o,1886.

nient.

` PATENT intron.

ARTHUR' c. minion, or NEW YORK, N. Y.

. DRAWING APPARATUS.

SFECIFIC'ATION forming part of Letters Patent No. 347,099, dated August10, 1886 Application filed March 31, 1886. Serial No. 197,312. (Nomodel.)

facilitates drawing and permits of the use of a\ large-sizeddrawing-paper.

'Ihe invention consists of a frame provided with a stationarydrawing-board,of a movable counterbalaneed T-square, and of rollers onwhich an endless sheet of drawing-paper is mounted.

The invention also consists of various parts and details andcombinations of the same, hereinafter more fully described, and pointedout in the claims.

IReference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the iigures.

Figure l is afront elevation of my improve- Fig. 2 is a side elevationof the same. Fig. 3 is a vertical cross-section of the same onV the linew x of Fig. 1. Fig. 4 is a detail view of the roller-bearing. Fig. 5 isa sectional plan View on the liney y of Fig. l. Fig. 6 is a sectionalelevation of the T-square, and Fig. 7 is au end view of a modificationof the T- square.

The main frame A is provided with the standards B B, which are connectedwith each other by the cross-bars B and B2, and by the stationarydrawing-board C,of convenient size. A roller, D, is mounted in the lowerends of the standards B B, and is provided onV the ends with groovedpulleys E E, over each of which passes an endless cord or chain, F,which cords also pass over the grooved pulleys G G, attached to the endsof the roller I-I, mounted on the bearings I, each of the bearings beingadjustable in a slot or recess, A, formed in the upper part of eachstandard-B, by means of a set-screw J.

Over the rollers D and H is placed an endless sheet of drawing-paper, K,which also is in close contact with the front surface of thedrawing-board C.

On the outer side of each standard B is fastened the guide-rod L, onwhich is mounted a slide, M, to which the T-square N is attached. Toeach slide Mis secured, near its upper end, a cord or chain, O, whichextends upward and passes over the guide-rollers P P, and thencedownward and to the'roller Q. secured to the counter-weight R, providedwith lugs R,which slide on the upright rods S S, attached to thecross-bars B B2. The T-sqnare Nslides in the two horizontalstraight-edges or guides U and U', attached to the slides M and theswinging straight-edge V, pivoted to the arm W, sliding on thehorizontal straight-edge or guide U, and connected by the slottedsegment WV', with the arm W2 sliding on the straight-edge U. The screwVl passes through the slot in the segment VQand through the lower end ofthe swinging guide or straight-edge V, and serves to hold the latter ineither a vertical or inclined position in relation to the horizontalstraight-edges U and U.

Instead of using the pivoted straight-edge V and segment W', I may alsoconnect the arms W and W2 rigidly with each other by fastening thestraight-edge V rigidly on the said arms XV and W2, and I then pivot asecond straight-edge, V2, on the straight-edge V, as shown in Fig. 7.The rigid straight-edge V then only serves to make vertical lines, whilethe other straight-edge, V2, serves to make angular lines.

The operation is as follows: A sheet of drawing-paper, K, is passed overthe rollers Dand II, and the ends are fastened together,so as to form anendless sheet of drawing-paper,which is held in a stretched positionover the drawingboard C by adjusting the set-screws J against thebearings I of the upper roller, H. The operator can then work on thedrawing-paper over the drawing-board C, with the help of the T-sqnare N,which can be easily moved up and down on the guide-rodsLwith theassistance of the counter-balance. With the aid of the straight-edges Uand U the operator is enabled to draw horizontal lines, and with theswinging straight-edge V, which can be moved laterally on thestraight-edges U andU, the operator can draw vertical or diagonal lines.The operator can, by pulling on either of the ropes O, move the paper upor down,.as

IOO

required by the work to be done, and is thus enabled to make drawings onthe drawing-paper K of considerable length without his movin gT from thedrawing-board;

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patentil. Ina drawing apparatus, the combination of aVfran1e,a drawing board attached to the same, two rollers, each havingpulleys on each end and being mounted on the said frame, and endlesscords passing over the said pulleys on the rollers,with acounterbalanced movable T- square, substantially as shown anddescribed.-

4. In a drawing apparatus, the frame A, the drawing-board C, the rollersD and H, over which is placed the endless sheet of drawingpaper, thecords or chains F, the pulleys E and G, attached to the rollers D and H,and the guide rods L, in combination with the slides M, the guides U andU', the T-square N, the cords or chains O, attached to the slides M andpassing over the pulleys P, and the counter-weight lt, substantially asshown and described.

5. in a drawing apparatus, the frame A, the drawing-board C, theguide-rods L, the slides M, the cords or chains @passing over thepulleys l), and the counter-weight Pt, attached to the ropes or chainsO, in combination with the straight-edges U and U, the arms \V and 72,the slotted segment \V, and the pivoted straight-edge V, adjustable onthe slotted segment W by ascrew, V', substantially as shown anddescribed.

ARTHUR C. FE 10N.

Vitnesses:

I. G-Emrrwn'r, E. BARQNET.

